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Matthew richardson on Instagram: "Have you used the hilti hkd drop in anchors? This is how they are used and how they work. After dropping into the hole you use a tool (recommended to use the hilti HSD—G setting tool or their sds version) to push the pin in further which pushes against the concrete. This holds the fixing in place. These are used for threaded rod which is utilised for all sorts of applications on commercial work sites."